|Proving Ring :
used for load measurements and are used in the outfits of a number of
Soil/Cement & Bitumen Testing Equipments like Direct shear Test
Apparatus.Triaxial Shear Test Apparatus, C.B.R. Test, Uncontained Test,
and Marshal Test etc.
Proving rings can be designed to measure either compression or tension
forces. Some are designed to measure both. The basic operation of the
proving ring in tension is the same as in compression. However, tension
rings are provided with threaded bosses and supplied with pulling rods
which are screwed onto the bosses.